Clumsy and impulsive, ten-year-old Logan is determined to have a better year in fifth grade than in the past but is hindered by an increasingly forgetful grandfather at home and a vengeful new classmate at school. In the first months of the school year he nearly loses a best friend, wreaks havoc in a pet shop and ruins his school fair, but he also learns to apologize and take responsibility for his actions. He comes to understand, even sympathize with the feelings of others—specifically his grandfather and Emily (the Snot) Scott. From the opening scene of Logan’s nearly naked grandfather caught with their neighbor’s flowers, the story relies heavily on small-boy humor for its laughs. But imaginative, inventive Logan has realistic concerns young readers will find believable. The worthwhile message that there are worse things than being laughed at is explicitly stated, and the plot moves inexorably to its dramatic, if predictable, conclusion. Co-author of the popular Bailey School Kids series, Jones aims for a slightly older audience here and hits her target well. Decker’s final illustrations not seen. (Fiction. 8-11)